更新时间:2024-01-25 GMT+08:00
分享

查询表倾斜或脏页率信息

功能介绍

该接口用于查询表倾斜或脏页率信息。

调用方法

请参见如何调用API

URI

GET /v1/{project_id}/clusters/{cluster_id}/dms/tables/statistic
表1 路径参数

参数

是否必选

参数类型

描述

project_id

String

项目ID。获取方法,请参见获取项目ID

cluster_id

String

集群ID。获取方法,请参见获取集群ID

表2 Query参数

参数

是否必选

参数类型

描述

rate_type

String

查询类型。固定取值。

  • skew:表倾斜率。
  • dirtyPage:表脏页率。

offset

Integer

偏移量,表示从此偏移量开始查询,offset>=0。

limit

Integer

每页显示的条目数量。

order_by

String

排序字段。固定取值。

  • table_size:表大小。
  • rate:表倾斜率或脏页率。

sort_by

String

正序还是倒叙。固定取值。

  • ASC:正序。
  • DESC:倒序。

filter

String

查询条件。固定取值。

  • db_name:数据库名称。
  • schema_name:schema名称。
  • table_name:表名。
  • table_owner:所属用户。

value

String

查询条件的取值。

请求参数

响应参数

状态码: 200

表3 响应Body参数

参数

参数类型

描述

collect_time

Long

数据采集时间毫秒级时间戳。

data

Array of ListTablesStatisticDto objects

表倾斜率或脏页率列表。

count

Integer

总列表大小。

表4 ListTablesStatisticDto

参数

参数类型

描述

db_name

String

数据库名称。

schema_name

String

schema名称。

table_name

String

表名。

table_owner

String

所属用户。

table_size

String

表大小。

skew_rate

Double

表倾斜率。

dirty_page_rate

Double

脏页率。

请求示例

https://{Endpoint}/v1/{project_id}/clusters/{cluster_id}/dms/tables/statistic?rate_type=dirtyPage&filter=&value=&offset=0&limit=1&order_by=&sort_by=ASC

响应示例

状态码: 200

{
  "collect_time" : 0,
  "data" : [ {
    "db_name" : "postgres",
    "schema_name" : "pmk",
    "table_name" : "pmk_snapshot_coordinator_stat",
    "table_owner" : "Ruby",
    "table_size" : "224 KB",
    "skew_rate" : null,
    "dirty_page_rate" : 0.77
  } ],
  "count" : 3
}

SDK代码示例

SDK代码示例如下。

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
package com.huaweicloud.sdk.test;

import com.huaweicloud.sdk.core.auth.ICredential;
import com.huaweicloud.sdk.core.auth.BasicCredentials;
import com.huaweicloud.sdk.core.exception.ConnectionException;
import com.huaweicloud.sdk.core.exception.RequestTimeoutException;
import com.huaweicloud.sdk.core.exception.ServiceResponseException;
import com.huaweicloud.sdk.dws.v2.region.DwsRegion;
import com.huaweicloud.sdk.dws.v2.*;
import com.huaweicloud.sdk.dws.v2.model.*;


public class ListTablesStatisticSolution {

    public static void main(String[] args) {
        // The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
        // In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
        String ak = System.getenv("CLOUD_SDK_AK");
        String sk = System.getenv("CLOUD_SDK_SK");

        ICredential auth = new BasicCredentials()
                .withAk(ak)
                .withSk(sk);

        DwsClient client = DwsClient.newBuilder()
                .withCredential(auth)
                .withRegion(DwsRegion.valueOf("<YOUR REGION>"))
                .build();
        ListTablesStatisticRequest request = new ListTablesStatisticRequest();
        request.withRateType("<rate_type>");
        request.withOffset(<offset>);
        request.withLimit(<limit>);
        request.withOrderBy("<order_by>");
        request.withSortBy("<sort_by>");
        request.withFilter("<filter>");
        request.withValue("<value>");
        try {
            ListTablesStatisticResponse response = client.listTablesStatistic(request);
            System.out.println(response.toString());
        } catch (ConnectionException e) {
            e.printStackTrace();
        } catch (RequestTimeoutException e) {
            e.printStackTrace();
        } catch (ServiceResponseException e) {
            e.printStackTrace();
            System.out.println(e.getHttpStatusCode());
            System.out.println(e.getRequestId());
            System.out.println(e.getErrorCode());
            System.out.println(e.getErrorMsg());
        }
    }
}
 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
# coding: utf-8

from huaweicloudsdkcore.auth.credentials import BasicCredentials
from huaweicloudsdkdws.v2.region.dws_region import DwsRegion
from huaweicloudsdkcore.exceptions import exceptions
from huaweicloudsdkdws.v2 import *

if __name__ == "__main__":
    # The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
    # In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
    ak = os.getenv("CLOUD_SDK_AK")
    sk = os.getenv("CLOUD_SDK_SK")

    credentials = BasicCredentials(ak, sk) \

    client = DwsClient.new_builder() \
        .with_credentials(credentials) \
        .with_region(DwsRegion.value_of("<YOUR REGION>")) \
        .build()

    try:
        request = ListTablesStatisticRequest()
        request.rate_type = "<rate_type>"
        request.offset = <offset>
        request.limit = <limit>
        request.order_by = "<order_by>"
        request.sort_by = "<sort_by>"
        request.filter = "<filter>"
        request.value = "<value>"
        response = client.list_tables_statistic(request)
        print(response)
    except exceptions.ClientRequestException as e:
        print(e.status_code)
        print(e.request_id)
        print(e.error_code)
        print(e.error_msg)
 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
package main

import (
	"fmt"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic"
    dws "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/dws/v2"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/services/dws/v2/model"
    region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/dws/v2/region"
)

func main() {
    // The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
    // In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
    ak := os.Getenv("CLOUD_SDK_AK")
    sk := os.Getenv("CLOUD_SDK_SK")

    auth := basic.NewCredentialsBuilder().
        WithAk(ak).
        WithSk(sk).
        Build()

    client := dws.NewDwsClient(
        dws.DwsClientBuilder().
            WithRegion(region.ValueOf("<YOUR REGION>")).
            WithCredential(auth).
            Build())

    request := &model.ListTablesStatisticRequest{}
	request.RateType = "<rate_type>"
	request.Offset = int32(<offset>)
	request.Limit = int32(<limit>)
	orderByRequest:= "<order_by>"
	request.OrderBy = &orderByRequest
	sortByRequest:= "<sort_by>"
	request.SortBy = &sortByRequest
	filterRequest:= "<filter>"
	request.Filter = &filterRequest
	valueRequest:= "<value>"
	request.Value = &valueRequest
	response, err := client.ListTablesStatistic(request)
	if err == nil {
        fmt.Printf("%+v\n", response)
    } else {
        fmt.Println(err)
    }
}

更多编程语言的SDK代码示例,请参见API Explorer的代码示例页签,可生成自动对应的SDK代码示例。

状态码

状态码

描述

200

查询表倾斜率或脏页率成功。

400

请求错误。

401

鉴权失败。

403

没有操作权限。

404

找不到资源。

500

服务内部错误。

503

服务不可用。

相关文档